Vulnerability DatabaseCVE-2026-54609
Mend.io Vulnerability Database
The largest open source vulnerability database
What is a Vulnerability ID?
New vulnerability? Tell us about it!
CVE-2026-54609
Published:July 28, 2026
Updated:August 04, 2026
QTI Neon is a minimal, game-agnostic, relay-based UDP multiplayer protocol library. In version 1.0.0, the relay's handleReconnectRequest forwards RECONNECT_REQUEST packets to the host without bounding them, so an unauthenticated client can drive relay-to-host amplification and cause a denial of service on the host. No fixed version is available as of this review.
Related Resources (6)
https://github.com/advisories/GHSA-85rg-p3fr-xc2f
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54609.json
https://github.com/Quiet-Terminal-Interactive/QTINeon/security/advisories/GHSA-85rg-p3fr-xc2f
https://nvd.nist.gov/vuln/detail/CVE-2026-54609
https://github.com/Quiet-Terminal-Interactive/QTINeon
https://pypi.org/project/qti-neon
Do you need more information?
Contact Us
CVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
HIGH
CVSS v3
Base Score:
8.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Resource Consumption
CWE-400
Insufficient Control of Network Message Volume (Network Amplification)
CWE-406
Allocation of Resources Without Limits or Throttling
CWE-770
EPSS
Base Score:
0.26